Skivingjffachine



A. M. ALEXANDERm SKIVING MACHINE.

APPLICATION r11 o1u1Y1.1911.

1,818,313v Patented Oct. 14,1919.

1 \1 "kvss I 6 wineciaa. jvzb emi'ar description'of the'i'nvention, suchas will en-. ableothers skilled in the-art to which'itap vious to those skilled in the artthatj if the WEED STATES E T I name ALEXANDER. M. ALEXANDER, or a nvnnty," MAssAoHnsiiTTs, tAS SIGNOR, Y MESNE ASSIGNMENTS, TO UNITED SHOE MACH 1 JERSEY, A CORPORATION or NEW JERS sa em. 3

To all whom it may concern j He it known that I, ALEXANDER M. ALEX- ANDER, a eitizenof the United States, re-j siding at Beverly,"in"the county of Essex and State ofMassachusetts,'have lnvented certain new' and useful Improvements in Skiving-Machines and I do hereby 1 declare the following to beta fu11,"e1ea1; and exact pertains, to make and use the same. 1

The present invention relates to leather skiting machines andmore 'partlcularly to machines which comprisea'rotary cyl1ndri-' cal skiving knife, a Presser foot and a feed roll arranged to hold the leather in "posit on and feed it to the knife. t V V Machines of this class are employed, among other things, for bevel'ing orski'ving the edges of thin sheets of leather and it s desirablethat they may be adjusted to vary the angle of the bevelwith precision and rapidity in order to accommodate a variety of kinds of Work. This variation in theangle of the bevel is generally secured byvaryingi face of the presser foot andthe cutting portion of the knife, edge but in order t obtain the correct 'r'elatlon between the presser foot and knife it is generally necessary to providefseveral ad ustments of'the Presser foot and in some cases 'also'anfad justment of the knife. It Will' 'thus be oboperator is 'requiredf'to nake several .acl- 'ustments in order to Obtain the correct relation betiveen the "presser footanohknife rately determined withinreasonable limits and to enable the requiredanglelof bevel to 17' be obtained with"thermanlpulation'fofonly a single 1 adjusting member. With: this object in view, one feature of the invention consistslin the combination with a 'cylindri- .7 an skivingfknifeanctfeed rollflQf a resser foot havingprovisionfor adjustment about" an axis inclined'to a radius'pa'ssing'through the point .at which 'the axis intersects the cylindrical" surface within which thetknife edge lies. Thls surface Wlll for con'veng ience be referred to as'the cylindrical sur Specification of Letters Patent I INERY coRPonATIon, or PATERSON, NEW

face of thelknife edge. Still further fea tures of the nvention comprise certain novel combinations and features of construction, arrangements of parts. hereinafter "described and claimed, the advantages 'of which' Will be appare'nt to those skilled in-theart from.

the following description."

In' the accompanying drawings illustratf ing-t 1e preferred form of the invention front elevation of their preferred forms; 7

{Fig 2' is a top plan'view of the foot'removedfrom the machine;

Fig. 3 is adetail illustrating a side elevation,'partly' in section, V and the several elements operating therewith;

Fig; 4

the arrows; and 3 B 1g."5 1s a ,detall view showing across Flgure -'l is a' detail showing a; partial; g V I the machine andillu'strat mg the several features of the invention in? of the presser foot of the machine cm 7 is a section taken upon the line 44: of, F 1g 3,loo'k'ing in' the direction of 7 f Patented 0011.14,:191-93 Application fi1ed. T1i1y 1,1911. Serial no. 636,494: o V

presser I section of the Work and illustrating the action of the knife upon the same.

Certain parts of the machine are. similar in construction and mode of operation to the machineshoivn anddescribed inthe co pending application' offAlexander, Serial No. 621,679, filed April 7, 19 1, and will be only briefly described herein 1n consequence:

thereof.

Thismachi'ne is provided with a cylindricalfskiving lmife indicated at 3' which is mounted'vvithin ac'asing 4 and projects up" Ward-ly'through opening-in the-same into a position to act'upon the material. The

material t bes kiVed is fedto the knife 31- byfa positivelyl driven "feed T011 5 which? is" yl'eldingly supported vvithin the knife and whichoohperates with 'presser fo ot 6" mounted without theknife'and arranged to-i actias'fagageffor' properly presenting'thef feed roll'a'nd the Work jg face of the Presser foot are curved tocorrespond v ith'thefcurvature of the knife" edge'ginforder' that the knife 'shailljmake a straight cuti'f The' presser initial vertical posi it into cooperating" relation tion one edge of with the knife edge. Thework'is guided into an operative posit-ion byfan' adjustable gage 9 which engages with theedge of the' mat'eriai as it is fed to the knife.

When'this machineis used for beveling, the working face of the presser foot is pos1'-' tio ned eccentrically to the knife edge and in the illustratedembodiment oftheinven-' ranged substantially in alinement with the resser foot is increased or desired to; form: a;

feather edge upon the, material, the edge gage is adjusted into a. positionin, alinement with. this edge of; thepresser foot: and when. it: i desired to ere {the b ve d ge substantial, thicImeSS. the edge gageis ad-- justed to a point betweenpresser foot, order tovary'the angle of thebevel which is- -formedz upon the. work, the eccentricity of the. working face of the decreaserhas de-v r sired andthis is accomplished,; without vary l by adjusting the presser ing-the fixed operativee the? dgef he P e ser ot a kt f ed foot-about anaxis a whichiisinclinedto aradii s passing through i the point at which cylindrical surface of the-,kniie edge; In, eflicient formof, the

n side of the kni ie and the axisintersects the.

the simplest and most invention which has asyetbeen devised, the presser foot is positioned above the front is adjusted, about an axisinclined rearwardly to a radius, passing throughlthe 1 point of "ntersectiong oi the axis with the cylindrical surfac -10f the knif To end the presser root, 6, as shown clearlyjnFigs; 1 and 3,i-,is. pivotally con nected to, a; supporting member -1Q ad1ustably'held in the; block Tinith'e' usual"v man" ner iandg whi h 18 provided. withglaterallyprojecting ears 12 serving to support; a pm 13, in an oblique position; upontwhich the press er foot 6 is journaledg ,Inorder to a yediu tfl P ss ro t c uat n member, ndicated generally 5 at 7 14 extends forwardly from jthe presser foot and sup-- T a sess th p ra s r lo k n s3 previd d'y w h; a knurled. operating head 1 7 br i1 1fiPQn eme, has it of atp n' rot ns member; 12L consists of? a frodj: 18, Ehaving, the

mesa- '9 ates: opposite end which is ar ranged to ng ge with supporting memberIQ and retainthe actu ating, member in the proper'position', The knurled head '15vislocked to the rod 18 a pin'20, and a sleeve servesasa hearing the Werner-aw i 'justment, to be; obta nedv with only a single manipulation of the actuatingjmemben Al- 7 the edges of the.

' notessentiah except so far as, specifiedv inthe cla'ilrhs andrnayv bechanged or'modified w thoutdepartingfromthebroader features I combination, 1 a

-: c n n ntl s: I e- -This tuatin me 10' r 1s r f icl dani sr rsen; n i th;

i e-Pre ser? I a I v fthe'actuating-J r I mberli it e Pr s nted, s' in pe used about the pi actuating, i-fliereown Provided with the rear. face of "the member for the rod and maintains the actuating member in the proper position relative toth lock 10. From: the-above description itwill "be obvious to those skilled-in art that upon" a slight rotation 'of the actuating member the presser foot will be turned about the'pin I3 and theangular relation between the working face of the presser foot and the edge of the knife will be correspondingly varied lt will also be apparent that this turning movement does not disturb the adjustment of theedgeoi thegptesser'fooe whieh: is positionedknife, edge, thus enabling the required;zad-- he s -tl e di s ent f e ny v he angle t t e ev pred es h I sifi di l .m9 ms f h h s f he presseri foot 'wi 11- relationzto theedge of the s-kiving the;workingface of the V 'presser foot is madeof a sufiicient width to e e h s po he, material-1st all times 7 V .w doesnot h proper r-elation, between; :the,

andthis adjustment consequently presserfoot and cooperatingv arts.

Although present invention has been described 1n connection withya machine em-.

of the invention,

is jclaimed is -Having thusdeseribed the invention, 7

a v a I ;1'. Aleathersk vmgmachine having, in H I I cylmdrical knifea feedroll at one sidealof' the knifegandfia lpresser:

foot'upon the opposite side? of the, iknife having provisionfor adjustment about tin-1 15 V 7 axisinclined "to a. radius-passing through the point the vaxis'ii iterscts the cylindr'icah surface j or the knifefedge,", substantiall y' as described, v 2.. A; leatl er kiv' one fs de oi ftlie l'mifej anidl p-f g v V- 'fOOQJ PQH, the opposite side of, the iknife having}, provision for[ adjustm fii t about an ax s extending obliquely to the planelof the 125 edge'in order to vary thebevelicuti by i knife. 7 V theknife, substantially asdcscribed.

" 3.,A leather skiving machine, having, ;in

combination, a skiving knife,,ar-feed roll one the: knife, a pressen foot; upon 130 in alinement with the presser foot; to: i

. I v s i employed w1th such. a ma- Whileit isv preferredto employ the spethe opposite side of the knife having a work ing face with one edge positioned in 0perative relation tothe knife edge, and a single means for varying the angular relation of the working face of the presser foot to the knife edge while maintaining a fixed operative relation between the edge of the presser foot and the knife edge, substantially as described.

4. A leather skiving machine having, in combination, a cylindrical knife, a feed roll, a presser foot having provision for adjustment about an axis inclined to a radius passing through the point at which the axis intersects the cylindrical surface of the knife edge, a worm gear formed upon the presser foot, and an actuating member having a worm formed thereon and arranged to engage with the Worm gear to adjust the presser foot, substantially as described.

5. A leather skiving machine having in combination, a cylindrical knife, a feed roll within the knife, a presser foot above the front side of the knife and having provision for adjustment about an axis inclined rearwardly to a radius passing through the point at which the axis intersects the cylindrical surface of the knife edge, and an actuating member for adjusting the presser foot, substantially as described.

6. A leather skiving machine having, in combination, a cylindrical skiving knife, a feed roll at one side of the knife, and a presser foot upon the opposite side of the copies of this patent may be obtained for five cents each, by addressing the knife having provision for adjustment about 1 an oblique axls to vary the angle of the bevel justing the gage angularly about a point lying in the operative portion of the gage and adjacent to one end thereof.

8. A skiving machine comprising a cylindrical knife having an edge at one end, a normally stationary gage mounted near said edge and having its surface adjacent to the edge approximately concentric therewith, a slide on which said gage is mounted movable in a plane perpendicular to the axis of the knife, and means for moving said slide, said gage being adjustably mounted on said slide for movement angularly about a point approximately in its operative edge. 7

9. A gaging means for a skiving machine comprising a normally stationary top gage, means for adjusting said top gage angularly about a point approximately 111 1ts operative surface, and means for adjusting the said gage bodily in a direction transverse to its operative surface.

ALEXANDER M. ALEXANDER.

lVitnesses:

Crmsrna E. ROGERS, Lnsrnn A. HOWE.

commissioner of Patents.

Washington, D. O. 

